不同桉木化学机械法制浆性能的研究  

Variation of Chemi-mechanical Pulping Properties from Several Eucalyptus spp. Woodchips

作　　者：邓拥军[1,2,3,4,5] 房桂干[1,2,3,4] 韩善明[1,2,3,4] 焦健[1,2,3,4] 李红斌[1,2,3,4] 梁芳敏[1,2,3,4] 林艳[1,2,3,4] 梁龙[1,2,3,4] 

机构地区：[1]中国林业科学研究院 林产化学工业研究所 [2]生物质化学利用国家工程实验室 [3]国家林业局 林产化学工程重点开放性实验室 [4]江苏省生物质能源与材料重点实验室,江苏南京210042 [5]中国林业科学研究院 林业新技术研究所,北京100091

出　　处：《林产化学与工业》2015年第1期63-69,共7页Chemistry and Industry of Forest Products

基　　金：林业公益性行业科研专项(201104003-06)

摘　　要：研究了尾巨桉、巨尾桉、尾叶桉、蓝桉及小叶桉这5种桉木的材性特征及其预处理-碱性过氧化氢化学机械浆（P-RC APMP）制浆性能。结果表明：5种桉木的综纤维素质量分数在77.96%-81.36%之间,小叶桉最高,巨尾桉最低;木质素质量分数在23.18%-26.62%之间,尾叶桉的最高,巨尾桉最低;纤维平均长度在755-785μm之间,差异较小。采用P-RC APMP制浆方法,在H2O2用量5%,Na OH用量4.5%浸渍条件下,小叶桉的制浆得率最高,达86.7%,巨尾桉最低,仅为84.2%;在相同加拿大游离度（300 m L CSF）下,蓝桉浆的强度性能和光学性能最优,纸浆的抗张强度和白度分别达30.13（N·m）/g和82.5%（ISO）,且所需磨浆电耗最低,仅1 188 k Wh/t,巨尾桉浆的强度性能和光学性能最差,纸浆的抗张强度和白度分别为16.9（N·m）/g和73.8%（ISO）,且所需磨浆电耗最高,约为1 370 k Wh/t。The fiber morphology and chemical composition of five kinds of eucalyptus（ Eucalyptus urophylla × E. grandis,E.grandis × E. urophylla,E. urophylla,E. globules,E. tereticonis） wood chips were analyzed. Their properties of chemi-mechanical（ P-RC APMP） pulping by preconditioning refiner and chemical alkaline peroxide were studied. The results showed that the holocellulose contents of the five different eucalyptus woods were between 77. 96 %- 81. 36 %,in which E. tereticonis had the highest and E. grandis × E. urophylla the lowest. The lignin contents of these woods ranged from 23. 18 %- 26. 62 %,in which E. urophylla had the highest and E. globules the lowest. Besides,there was very small difference in the fiber average length of the woods and it was between 755 and 785μm. Then five different eucalyptus wood chips were processed by P-RC APMP under the condition of impregnating with H2O25. 0 % and NaO H 4. 5%. As a result,E. tereticonis showed the highest pulp yield up to86. 7 %,while the pulp yield of E. grandis × E. urophylla was the lowest,84. 2 %. In addition,with the same Canadian Freeness Standard,E. globules pulp exhibited the best strength and optical properties and the lowest pulping power consumption.On the contrast,E. grandis × E. urophylla pulp showed the worst strength and optical properties,and the highest pulping power consumption.

关 键 词：桉木 制浆性能 材性特征 化学机械浆 

分 类 号：TQ35[化学工程]